As an old and now retired medic. My personal definition of dead was if you made into the back of my amp-a-lamps or not. If you did you weren't dead-- you were merely having a bit of a bad day. I might have needed to do your breathing for you and I might have needed to make your heart pump blood. But until some doctor somewhere decided you weren't worth his time and effort, you were still alive. Because I don't haul dead people.

So, by my definition as a trained and professional medical person, you where never dead-dead. Just someone have a bad day among many others having a bad day at that time.